/*
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
 * with the License.  You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package com.dtstack.chunjun.restore.mysql.util;

import java.util.ArrayList;
import java.util.Comparator;
import java.util.LinkedHashMap;
import java.util.List;
import java.util.Map;

public class TransformerUtil {

    private TransformerUtil() throws IllegalAccessException {
        throw new IllegalAccessException(getClass() + " can not be instantiated.");
    }

    public static byte[] objectToBytes(Object[] objects) {
        byte[] bytes = new byte[objects.length];

        for (int i = 0; i < objects.length; i++) {
            bytes[i] = Byte.parseByte(String.valueOf(objects[i]));
        }
        return bytes;
    }

    public static LinkedHashMap<String, Integer> sortHeaders(
            LinkedHashMap<String, Integer> headers) {
        List<Map.Entry<String, Integer>> entries = new ArrayList<>(headers.entrySet());
        entries.sort(Comparator.comparingInt(Map.Entry::getValue));
        LinkedHashMap<String, Integer> sortedHeaders = new LinkedHashMap<>(headers.size());
        for (Map.Entry<String, Integer> entry : entries) {
            sortedHeaders.put(entry.getKey(), entry.getValue());
        }
        return sortedHeaders;
    }
}
